mitchellhansen/voxel-raycaster
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Fixed the camera movement so it now take into account sub-voxel movement

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Also fixed the distortion around the XY axes
This commit is contained in:
MitchellHansen
2016-09-23 14:08:01 -07:00
parent fe0fbc04e1
commit 1620f40d02
5 changed files with 29 additions and 22 deletions
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24
kernels/minimal_kernel.cl → kernels/ray_caster_kernel.cl
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@@ -45,10 +45,6 @@ __kernel void min_kern(
int3 voxel_step = {1, 1, 1};
voxel_step *= (ray_dir > 0) - (ray_dir < 0);
/*voxel_step.x *= (ray_dir.x > 0) - (ray_dir.x < 0);
voxel_step.y *= (ray_dir.y > 0) - (ray_dir.y < 0);
voxel_step.z *= (ray_dir.z > 0) - (ray_dir.z < 0);*/
// Setup the voxel coords from the camera origin
int3 voxel = convert_int3(*cam_pos);
@@ -56,9 +52,25 @@ __kernel void min_kern(
// traverse an integer split
float3 delta_t = fabs(1.0f / ray_dir);
// Intersection T is the collection of the next intersection points
// offset is how far we are into a voxel, enables sub voxel movement
float3 offset = ((*cam_pos) - floor(*cam_pos)) * convert_float3(voxel_step);
//offset.x += delta_t.x * convert_float((voxel_step.x < 0));
//offset -= delta_t * floor(offset / delta_t);
// Intersection T is the collection of the next intersection points
// for all 3 axis XYZ.
float3 intersection_t = delta_t;
float3 intersection_t = delta_t * offset;
if (intersection_t.x < 0) {
intersection_t.x += delta_t.x;
}
if (intersection_t.y < 0) {
intersection_t.y += delta_t.y;
}
if (intersection_t.z < 0) {
intersection_t.z += delta_t.z;
}
int2 randoms = { 3, 14 };
uint seed = randoms.x + id;